28156338300 has 36 divisors (see below), whose sum is σ = 81465673016. Its totient is φ = 7508356800.

The previous prime is 28156338271. The next prime is 28156338341. The reversal of 28156338300 is 383365182.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46926931 + ... + 46927530.

Almost surely, 2^28156338300 is an apocalyptic number.

28156338300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28156338300 is an abundant number, since it is smaller than the sum of its proper divisors (53309334716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28156338300 is a wasteful number, since it uses less digits than its factorization.

28156338300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93854478 (or 93854471 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 28156338300 in words is "twenty-eight billion, one hundred fifty-six million, three hundred thirty-eight thousand, three hundred".